Preprint Article Version 1 This version is not peer-reviewed

C-RAN Traffic Aggregation on Latency-controlled Ethernet links

Version 1 : Received: 12 October 2018 / Approved: 12 October 2018 / Online: 12 October 2018 (16:48:50 CEST)

How to cite: Tonini, F.; Masood Khorsandi, B.; Bjornstad, S.; Veisllari, R.; Raffaelli, C. C-RAN Traffic Aggregation on Latency-controlled Ethernet links. Preprints 2018, 2018100276 (doi: 10.20944/preprints201810.0276.v1). Tonini, F.; Masood Khorsandi, B.; Bjornstad, S.; Veisllari, R.; Raffaelli, C. C-RAN Traffic Aggregation on Latency-controlled Ethernet links. Preprints 2018, 2018100276 (doi: 10.20944/preprints201810.0276.v1).

Abstract

Centralized/Cloud Radio Access Networks (C-RAN) are deployed in converged fixed-mobile networks to exploit the flexibility coming from joint application of Network Function Virtualization (NFV) and Software Defined Networking (SDN). In this context, optical links connecting C-RAN nodes, possibly based on the Ethernet standards, may carry traffic with different requirements in terms of latency and throughput. This paper considers the problem of traffic aggregation on C-RAN optical Ethernet links with latency control for fronthaul traffic and throughput capability for backhaul traffic. Integrated hybrid nework technique is applied to show how time transparency can be enforced for Ethernet encapsulated Common Public Radio Interface (CPRI) traffic while allowing statistical multiplexing of backhaul traffic. Simulation results show the effectiveness of segmentation of backhaul traffic to allow exploitation of the available bandwidth even with high capacity CPRI options.

Subject Areas

hybrid optical networks; Ethernet; fronthaul; backhaul; C-RAN; convergence

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